8138441677 has 2 divisors, whose sum is σ = 8138441678. Its totient is φ = 8138441676.

The previous prime is 8138441653. The next prime is 8138441681. The reversal of 8138441677 is 7761448318.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7716919716 + 421521961 = 87846^2 + 20531^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8138441677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8138441677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8138441777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4069220838 + 4069220839.

It is an arithmetic number, because the mean of its divisors is an integer number (4069220839).

Almost surely, 2^8138441677 is an apocalyptic number.

It is an amenable number.

8138441677 is a deficient number, since it is larger than the sum of its proper divisors (1).

8138441677 is an equidigital number, since it uses as much as digits as its factorization.

8138441677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168, while the sum is 49.

The square root of 8138441677 is about 90213.3120830845. The cubic root of 8138441677 is about 2011.4708899786.

The spelling of 8138441677 in words is "eight billion, one hundred thirty-eight million, four hundred forty-one thousand, six hundred seventy-seven".